Databases Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

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Databases Interview Questions

Questions Answers Views Company eMail

i have a table eno dno sal 1 10 200 2 10 150 3 10 100 4 20 75 5 20 100 i want to get sal which is less than the avg sal of thri dept. eno dno sal 2 10 150 3 10 100 4 20 75

IBM,

12 20461

Shall I get Pro*C Compiler in Oracle-10g release ?

1 4746

how to see the data (in unix) using dataset in datastage?

iGate,

1 6814

What are advantages of dateset in datastage?

iGate,

1 2339

To find second largest salary in Employee table

CSS,

17 21064

Write a query to find the name of employees those who have joined on Monday.(based on column hire_date)

Satyam,

15 41776

what will be the output: select 1 from emp union all select 2 from emp;

iNautix,

2 13485

what is the difference between cursor FETCH and FOR LOOP ?

CG-VAK, Tech Mahindra,

3 25997

Write a query to find five highest salaries from EMP table. (there is a column SALARY)

Cap Gemini, iNautix,

24 52623

what is difference between DBMS and RDBMS?

Metric Stream,

2 6607

There is a sequence with min value 100. I want to alter this sequence to min value as 101. If the table has already data in the sequence column as 100,101,102... Is it possible to do so ?

IBM,

4 11633

how to get second highest sal of emp table

6 10288

I applied Transactional with updatable subscriptions replication on 2 tables now i want to delete those 2 tables but i cannot delete those tables as replication is running how can i stop replication for those 2 tables(but i don't want to delete those replicated tables but i need to stop the replication) how can i do that

1 2105

How can we Use Linked Server? Uses of Linked server

IBM,

1 5683

What are the Pre Requisites when you apply Srvice Packs?

IBM,

1 4394

Un-Answered Questions { Databases }

How to enter binary string literals in ms sql server?

1235

1. Tell me about your self? 2. Latest Project Introduction? 3. Difference between server jobs and parallel jobs? 4. Seq-Seq Explain its behavior and execution mode and which parallelism technique is used? 5. What is padding characters? 6. Seq-Seq, Seq-Copy-Seq which one is the best and efficient? 7. How many reject links do we have to a transformer? 8. How many reject links to join stage? 9. Difference between join and lookup? 10. How to design PX routine? 11. How can we call job in another job? 12. Difference between batch and sequencer? 13. Which Database is used? 14. What is change capture? Give briefing of that? 15. What is change Code? Explain? 16. How you call UNIX in Ds? 17. How do you call JCL in UNIX? 18. How do you pass the job status of one job to another job? Have designed any job sequencer? 19. How do you find a file in existed directory? 20. How can you call parallel jobs in transformer? 21. Execution of jobs in command line? 22. Tuning of sql queries? 23. What is orchestrating metadata? 24. What are junk dimension? 25. What are the third party tools you are used? 26. What are the system variables you have used? IBM 1. What is virtual dataset? 2. How do you handle reject link to a peek stage? 3. What is transaction table? 4. Which one is the efficient from the following? a. ODBC enterprise b. Oracle enterprise 5. How can you extract data from excel sheet? Do you know how to parameterize, this option? 6. Six pages of complex query I have, how do you simplify this query? 7. Difference between dataset and lookup file set?

1973

Is there any performance difference between if exists (select null from table) and if exists (select 1 from table)?

1021

what is collation? : Sql dba

1222

Can we rollback truncate?

1070

How to provide default values to function parameters?

1243

explain different types of backups avaialabe in sql server? Given a particular scenario, how would you go about choosing a backup plan? : Sql server database administration

1121

Explain “row_number()” in sql server with an example?

1066

Have you created fact table and dimension tables?

696

What is the primary use of the model database?

1144

How to remove duplicate rows from table except one?

1077

in oracle BPM composer in part BA model on design model in enterprise model i cannot connection with value chain model work not links in part properties do you can me help me?

1597

How do I start sql server 2017?

1005

Please send me Informatica 8.1 certification dumps, my mail id mona85gupta@gmail.com

1939

Equi join and non equi join is possible with sql server?

1119

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